3. ACQUISITIONS - SWS Purchase Price Allocation (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Feb. 24, 2021	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill	$ 31,797,564	$ 32,034,559	$ 19,049,198	$ 5,903,641
Total assets	297,488,821	292,612,596	317,473,121	22,340,063
Contingent consideration - Current	650,000	2,416,667	820,802	750,000
Total current liabilities	11,910,017	7,340,445	10,063,022	5,382,529
Contingent consideration - Non Current	2,600,000	833,333
Total Liabilities	15,693,207	8,892,137	11,756,655	5,913,698
Additional paid-in capital	414,783,896	400,032,436	444,074,832	132,809,830
Total Stockholders' equity	281,795,614	283,720,459	305,716,466	16,426,365		$ 18,885,341
Total Liabilities and Stockholders' equity	297,488,821	292,612,596	317,473,121	22,340,063
Change in fair value of contingent consideration
Total other income (expense)	(2,058,948)	9,897,012
Net Income/(loss)	(16,677,127)	7,400,040	(21,812,010)	$ (23,346,143)
Net Income (loss) attributable to the Company’s common shareholders	(16,677,127)	7,222,535
Change [Member]
Business Acquisition [Line Items]
Goodwill	(10,408,798)	(10,408,798)
Total assets	(10,408,798)	(10,408,798)
Contingent consideration - Current	(855)	(1,319,751)
Total current liabilities	(855)	(1,319,751)
Contingent consideration - Non Current	(2,000,000)	(833,333)
Total Liabilities	(2,000,855)	(2,153,084)
Additional paid-in capital	(8,063,798)	(8,063,798)
Total Stockholders' equity	(8,407,943)	(8,255,714)
Total Liabilities and Stockholders' equity	(10,408,798)	(10,408,798)
Change in fair value of contingent consideration	(152,229)	(191,916)
Total other income (expense)	(152,229)	(191,916)
Net Income/(loss)	(152,229)	(191,916)
Net Income (loss) attributable to the Company’s common shareholders	(152,229)	(191,916)
Restated [Member]
Business Acquisition [Line Items]
Goodwill	21,388,766	21,625,761
Total assets	287,080,023	282,203,798
Contingent consideration - Current	649,145	1,096,916
Total current liabilities	11,909,162	6,020,694
Contingent consideration - Non Current	600,000
Total Liabilities	13,692,352	6,739,053
Additional paid-in capital	406,720,098	391,968,638
Total Stockholders' equity	273,387,671	275,464,745
Total Liabilities and Stockholders' equity	287,080,023	282,203,798
Change in fair value of contingent consideration	(152,229)	(191,916)
Total other income (expense)	(2,211,177)	9,705,096
Net Income/(loss)	(16,829,356)	7,208,124
Net Income (loss) attributable to the Company’s common shareholders	$ (16,829,356)	$ 7,030,619
Solar Watt Solutions [Member]
Business Acquisition [Line Items]
Finite-Lived Customer Lists, Gross					$ 5,122,733
Goodwill					1,642,409
Business Combination, Assets and Liabilities Arising from Contingencies, Amount Recognized, Other than at Fair Value, Net					77,235
Acquisition Costs, Cumulative					6,687,907
Net Income/(loss)			$ 811,727
Solar Watt Solutions [Member] | Adjustments To Fair Value [Member]
Business Acquisition [Line Items]
Finite-Lived Customer Lists, Gross					4,932,733
Acquisition Costs, Cumulative
Solar Watt Solutions [Member] | Final Allocation [Member]
Business Acquisition [Line Items]
Finite-Lived Customer Lists, Gross					190,000
Goodwill					6,820,535
Business Combination, Assets and Liabilities Arising from Contingencies, Amount Recognized, Other than at Fair Value, Net					322,628
Acquisition Costs, Cumulative					6,687,907
Solar Watt Solutions [Member] | Fair Value [Member]
Business Acquisition [Line Items]
Goodwill					5,178,126
Business Combination, Assets and Liabilities Arising from Contingencies, Amount Recognized, Other than at Fair Value, Net					$ 245,393